According to the above figure, drag the blocks out of flyout panel to make a complete program.

The green flag block is necessary.

The robot will shake head if your palm is too near.

PS: If you have ever used other ultrasonic sensor like sr-04, it needs one of each trig and echo pin. Kittenblock support almost most common arduino compatible electronic modules, you may find Arduino in the hardware dropdown.

PS2: If you have a 2.0 version of NekoMimi module it will extend to 300cm and support input voltage of 3.3V.